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Abstract

The value of roentgen rays in the early diagnosis of pulmonary tuberculosis has been a theme of controversy in the past, on the assumption that it was a rival of the clinical examination. At present it is commonly granted without question that the two methods are complementary, mutually helpful, mutually corrective, and almost indispensable to each other. Accordingly, the practitioner of either may point out its advantages without seeming to boast, or admit its limitations without seeming to make reluctant concession.

With respect to the technic of roentgenologic examination of the lungs, it will be sufficient to say that roentgenoscopic